Coupling covering



FIG. 1 is a top isometric view of the coupling covering showing the new design;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front plan view thereof, the rear plan view being a mirror image of the front plan view; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a coupling covering, as shown and described. 